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<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>
<body>
  
  <script type="module">
    import { reactive, effect, ref, toRefs, computed } from "./reactivity/index.js"
    function useProduct() {
      const product = reactive({
        name: 'Iphone',
        price: 5000,
        count: 3
      })
      return toRefs(product)
    }
    const {price, count} = useProduct();
    let total = computed(() => {
      return price.value * count.value;
    })
    console.log(total.value);

    price.value = 4000;
    console.log(total.value)

    count.value = 1;
    console.log(total.value)
    

  </script>
</body>
</html>